php的问题
下面一段为什么不能向服务器天加记录啊??
<html>
<body>
<?php
if ($submit) {
$db = mysql_connect("localhost", "root");
mysql_select_db("mydb",$db);
$sql = "INSERT INTO employees (first,last,address,position)
VALUES ('$first','$last','$address','$position')";
$result = mysql_query($sql);
echo "Thank you! Information entered.\n";
} else{
?>
<form method="post" action="<?php echo $PATH_INFO?>">
名：<input type="Text" name="first"><br>
姓：<input type="Text" name="last"><br>
住址：<input type="Text" name="address"><br>
职位：<input type="Text" name="position"><br>
<input type="Submit" name="submit" value="输入信息">
</form>
<?php
}
?>
</body>
</html>
